HST campaign - 11 dwarf novae in 2021-2022

Affiliation
American Association of Variable Star Observers (AAVSO)
Tue, 10/26/2021 - 16:45

AAVSO Alert Notice 758 announces an observing campaign on 11 dwarf novae being observed by HST in 2021-2022. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
Campaign Target Listing

Will the detailed Target listing that appeared in the Alert email today also end up somewhere in this forum?

Cheers

Gary

Affiliation
American Association of Variable Star Observers (AAVSO)
Campaign Target Listing

Apologies, I did find the listing by clicking on the Alert in the Forum Intro

Gary

Affiliation
American Association of Variable Star Observers (AAVSO)
Target list for 2021-2022 HST campaign

Here is the target list for the dwarf novae in Alert Notice 758. The list will be updated as the specific HST date/time for each target becomes known.

Good observing,

Elizabeth

Targets: November 2021 – September 2022

Name (primary VSX name) Alternate Name R.A. (2000) Dec (2000) Range CV type HST window/date Scheduled for/Completed
CH UMa   10 07 00.72 +67 32 47.5 10.7-15.3 V  UG November 2021 completed
YZ LMi   09 26 38.73 +36 24 02.5 16.3 g-20.5 CV UGSU/IBWD+E December 2021 completed
GP Com   13 05 42.40 +18 01 03.8 15.7-16.2 V IBWD January 2022 April 29-30
V1239 Her   17 02 13.25 +32 29 54.2 13.7 CR-19.1 V UGSU+E February 2022 completed
V493 Gem ASASSN-14mv 07 13 27.28 +20 55 53.3 11.7 - 18.2 V UG/IBWD March 2022 completed
SDSS J154453.60+255348.8 (CrB) 2MASS J15445360+2553488 15 44 53.60 +25 53 49.0 16.0 - 19.7 g NL+E April 2022 removed from targets
RY Ser   17 23 07.18 -12 48 09.7 13.6 - 16.6 V UG May 2022  
SDSS J190817.07+394036.4 (Lyr) KIC 4547333 19 08 17.08 +39 40 36.4 16.2 - 16.3 V IBWD June 2022  
UU Aql   19 57 18.77 -09 19 21.1 11.0 - 17.0 V UGSS July 2022  
V485 Aqr SDSS J204448.92-045928.8 20 44 48.92 -04 59 28.8 14.3 - 17.1 V UG August 2022  
ASASSN-14cn (Dra)   16 11 33.95 +63 08 32.0 13.6 - 18.7 V UG/IBWD+E September 2022  

Charts with comparison stars for the targets may be created using the AAVSO Variable Star Plotter (VSP).

Affiliation
American Association of Variable Star Observers (AAVSO)
Alert Notice 758

Hi,

I will be using iTelescope to capture my images so economics will limit the number of observations that I will be able to do (maybe 10-12 per month). Will it be worthwhile for the campaign for me to proceed and any suggestions as to the timeing of my observations.

Richard Brown

Hi Richard,

Thank you for…

Hi Richard,

Thank you for you interest in this campaign!
The scheduled time of each HST observation will be published in the forum as soon as we know them (typically three weeks before the observations take place). It is very important for us to get a positive measurement in the 24 hours prior the HST observations. Could you focus your observations in that time window and in the two/three days before? Such observations would very valuable and helpful for us.

I hope this answers your question, but let me know if you need more details.

Best,
Anna

Affiliation
American Association of Variable Star Observers (AAVSO)
YZ LMi being observed with HST on December 30, 2021

AAVSO Alert Notice 762 announces that the SU UMa-type cataclysmic variable is being observed by HST on December 30, 2021. Please see the notice for details and observing instructions. This star is one of the targets in the campaign announced in Alert Notice 758.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
GP Com HST schedule - Alert Notice 764

AAVSO Alert Notice 764 gives the HST observing schedule for GP Com, the next target in Dr. Pala and colleagues' CV campaign. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
HST observation of GP Com moved forward to Jan 18

AAVSO Alert Notice 765 announces a schedule change for the HST observations of GP Com. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
V1239 Her HST schedule - Alert Notice 768

AAVSO Alert Notice 768 gives the HST observing schedule for V1239 Her, the next target in Dr. Pala and colleagues' CV campaign. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
V493 Gem obs needed for HST - Alert Notice 772

AAVSO Alert Notice 772 gives the HST observing schedule for V493 Gem, the next target in Dr. Pala and colleagues' CV campaign. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ

Affiliation
American Association of Variable Star Observers (AAVSO)
GP Com HST observations Apr 29-30, 2022

AAVSO Alert Notice 775 gives the exact schedule for HST observations of the cataclysmic variable GP Com. Observations tonight and tomorrow are particularly crucial. Please see the notice for details and observing instructions.

There are threads for this campaign under the following forums:

- Campaigns and Observing Reports: https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022
- Cataclysmic Variables https://www.aavso.org/hst-campaign-dwarf-novae-2021-2022-01

Please subscribe to these threads if you are participating in the campaign so you can be updated. Join in the discussion or ask questions there!

Many thanks, and Good observing,

Elizabeth O. Waagen, AAVSO HQ